Mathematics: Solve the following: a) 2(x + 3) = x -4 b) 4(5x - 2) = 2(9x + 3)

Solve the following: a) 2(x + 3) = x -4 b) 4(5x

famouzgal

28.01.2022

$\text{a) } 2(x + 3) = x -4$

2x+6= x -4

2x+6-6= x -4-6

2x= x -10

2x-x= x -x-10

x=-10

$\text{b) } 4(5x - 2) = 2(9x + 3)$

20x - 8 = 18x+ 6

20x - 8+8 = 18x+ 6+8

20x = 18x+ 14

20x-18x = 18x-18x+ 14

2x = 14

$\frac{2x}{2} =\frac{14}{2}$

x=7

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jaylene33002

24.11.2020

(-2,-2)

Step by step:

(-1,0) (-3,-4)

(xa,ya)(xa,yb)

$\frac{ x ^{a} + {x}^{b} }{2} . \frac{y ^{a} + y^{b} }{2} \\ = \frac{ - 1 + - 3}{2} . \frac{0 + - 4}{2} \\ = \frac{ - 4}{2} \frac{ - 4}{2}$

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